A 40th Celebration To Remember. Honor the couple celebrating 40 years of bliss with Ruby Anniversary Invitations. Your anniversary party guests will be thrilled to receive these elegant red invitations in the mail! 25 invitations and envelopes per package. Anniversary invites are approximately 4 x 4 1/2. The front of the invites read "40th Anniversary". Spaces on the inside to write in party specifics such as "For, Date, Time, Place, Give By, R.S.V.P". Celebrate your 40th in style with fun and fabulous red stationery. Stock up on the wedding anniversary supplies you need to make their 40th party one everyone will remember!